At this point most of the changes you are noticing are probably from the relief of finally starting your journey. The mental changes usually sneak in and may take a month or two before you start noticing them. I have been on the ride a little over 9 months. Although I have noticed quite a few mental and physical changes, I am still impatient for more! It is certainly nice to have something to look forward to. From what I have read most changes take place within the first two years, but the changes will slowly continue for many years to come. Enjoy the ride!